Restorative & Materials · single question
Which liner is CONTRAINDICATED under composite restorations?
Show answer and explanation
Correct answer: C. Zinc oxide-eugenol (ZOE)
- A. Polycarboxylate is acceptable as a base/liner under composite.
- B. Glass ionomer is commonly used under composite (sandwich technique).
- C. Correct. Eugenol inhibits the polymerization (set) of resin composites, so ZOE is contraindicated beneath composite.
- D. Calcium hydroxide is acceptable as a direct/indirect pulp-cap liner under composite.
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